Crank-handle.



A. W.' BEAMAN.

UBANK HANDLE. APBLIUATION Hmm D110. 1o, 190s.

Patented 1m28, 1909. 2 SHEETS-suur 1.`

.NNRNS A; w.- BBAMAN. GBANK HANDLE, APPLIoATIoN FILED Dnmloflooa.

Patented Dec. 285-1909.

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UNITED srargs PATENT OFFICE. y

ARTHUR W. BEAMAN, F WGRGESTER, MASSACHUSETTS.

(iRANK-HANDLE.

To all whom fit may concern:

Be it known that I, ARTHUR W. BEAMAN, a citizen of the United States, residing at Worcester, in the county of lVorcester and' State of Massachusetts, have invented a new and useful Crank-Handle, of which the following is a specification.

This invention relates to a crank handle.

The principal objects of the invention are to provide a construction which will be capable of use for various purposes including crank handles and which will permit of man-- ufacturing the same in large quantities in an inexpensive manner and at the same time provide t-he necessary strength with a mini operation is performed thereon. Fig. lis a side view thereof. Fig. is a plan of the same blank after another operation is performed. Fig. 6 is a side View thereof. Fig. 7 is a sectional view of the same on the line 7 7 of Fig. 5. Fig. 8 is a fragmentary plan showing the blank after another operation is performed. Fig. 9 is a transverse sectional view on the line 9-9 of Fig. 8. Fig. 10 is a plan showing the device after the next operation is performed. Fig. 11 is a side View thereof. Fig. 12 is a side view of the blank in substantially the same condition after the handle is turned down at right-angles. Fig. 13 is a plan of the same. Fig. 1/1 is a View similar to' Fig. 13 showing another operation. Fig. 15 is a side view showing the application of -a strengthening ferruleto thel socket end of the crank handle. Fig; 16 is a plan of a portion of the same. Fig. 17 is a side view of the complete crank handle in its' preferred form. Fig. 18 is a plan of a portion of the same. Fig. 19 is a bottom plan thereof. Fig. 2() is a plan of the ferrule in the irst stage of manufacture. Fig. 21 is a side View thereof. Fig. 22 is a plan'showing the next step in the manufacture of the fer- F ig. 2 is a side elevation thereof.-

Specication of Letters Patent. Patented Dec. 28, 1909.

Application led December 10, 1908. Serial No. 466,736.

rule. Fig. 23 is a side view showing the ferthis invention as has been stated is shown complete in Figs. 17,18 and 19. Referring to these figures, the crank handle is shown as having a polygonal socket surrounded by a strengthening ferrule 30 of sheet metal and is provided with a main portion or shank 12 of sheet metal in a hollow form which terminates in an integral handle 13 also of hollow sheet metal. 1n order to produce a crank handle of this character, the following steps preferably -vare taken. The

rocedure illustrated in the drawings is as ollows: First a blank of sheet metal is out out having a main shank portion tapering from one end to the other, and provided at one end with shoulders 16 and a substantially circular end 17. At the other end it is` provided "with a pair of diverging arms 18. This is illustrated in Figs. 1 and 2. The iirst operation to be performed is preferably to operate on this blank by dies so as to curl up the edges 19 of the circular end as 1s shown in Figs. 3 and 4. Preferably at the same time a pair of substantially parallel projecting ribs are formed near the opposite end of the blank which terminate at thel inner ends of the arms 18. These ribs are at a distance apart equal to the Width ofthe shank of the completed article. When this has been done the blank is again placed 1n dies and substantially the whole of the shank portion is turned up at the edges 21 so as to give a 'trough-shaped form and bring the edges 19 and the edges of the main part of the shank up into substantially a parallel position as shown in Fig. 7. Preferably at the same time the two larms 18 are pressed out as shown 4at 22.to form trough-shaped diverging members each having a form corresponding to half of a regular polygon. After this has been done 'themain portion and handle portion at the end are pressed at the side as shown in Fig. 8 so as to form a cross section similar to'that shown in Fig. 9. Thenl preferably by means of dies another pressing operation is performed so as to close together the edges 19 and 21 and produce a form like that shown in Figs. 10 and 11. It will be noticed that here the edges of the trough-shaped arms 22 are brought together at the same time and that the ribs 20 terminate in shoulders 26 projecting beyond the corners of the arms 22 a distance equal to the thickness of the metal. This produces a straight hollow article having a projecting socket member preferably of polygonal form which itself could be used as a wrench or crank handle for some purposes.

In order to produce the particular form of the invention shown in Figs. 17, 18 and 19 the manufacture of the device is continued as followsz-The end ormed of the parts 17 and 19 is bent down at right angles to form a handle 13. This preterably is bent vaway from the'joint between the edges 21 formed when the parts are brought into the condition shown iny Fig.v10, andit is found" in practice that. this separates said joint as is indicated in Fig. 13. The next step therefore is to close it again, which preferably is done b dies and which brings the parts into the orm shown in Fig. 14. Thecrank handle is now completed, except forthe socket end which as so far stated is formed. from the arms 18 bent into the gether. In order to strengthen an complete this part a ferrule 30 is constructed. This is first pressed out of sheet metal into cup-shape form as shown in Figs. 2O 'and 2l. This ferrule has a bottom 31 which is punched out at 32 to form al poly onal or other shaped opening similar to the shape of the passage between the arms 22 according to the use to which the article is to be put, and it is also died out at 33 to form a shoulder 3d having a slightly curved edge and A having walls 35 atthe ends. The ferrule in this position isforced on the trough shaped arms 22 las indicated in Fig. 15. It will be understood of course that it could be applied directly to the. form shown in Figs. 10 and 11 in the same way. When the ferrule is forced to its extreme position it will be seen that the walls or lips 35 at the ends fit against the pair of shoulders 26 formed at the ends of projecting ribs 20. The purpose of these ribs will now be seen. They were originally formed in such position that when the shank part of the article was completed they would be located at the sides of the trough-shaped arms and overlap' the same so as to project therefrom as shown most clearly in Figs. 5, 10 and 14. Their outer edges are now iiush with the outer surface of the ferrule and their ends engage against the shoulders 35 so as to `assist 1n holding the ferrule properly in position and to strengthen the device atthls point. It will be understood, of course, that the opening 32 in the end wall of the ferrule registers with the ends of the arms 22 and if the device is intended to lfit a square nut or ,bolt` referably i this opening is made square, and the arms 22 are formed to produce a square end. If

the implement is tobe used for any other form of bolt or nut these two parts will be modified accordingly in a very obvious man- HQI'.

the ferrule 1s upset or swaged inwardly so as to overlap the ends of the arms 22 and securely tix the ferrule thereon. The swaging of the wall 31 not only clamps said wall i against the ends of the arms 22, but it has a. tendency to force the angular outer edges of said arms into close and rm contact with the interior of the ferrule so as to secure the same firmly in position. The shoulders 16 form a rounded bead 27 on the completed article. It will be seen that in this way a very practical way of manufacturing a crank-handle, or the like, is secured and one i which'does away with the expensive opera-A tion of molding and'casting, and which has many advantages over the forgingy methods which have been employed on some types. of articles of this character. In addition to this a device is secured which is very much 4 lighter than any implement of equal strength trough-shape-arms 2 2 and then brought toand size which can bemade of solid metal, as it is well understood that a hollow structureis much stronger than a solid one hav ing the same amount of metal.

It is. to be understood many modiiications can be made in the details of construction of the article without departing from the. scope of the invention as expressed in the claims.

j Therefore I do not wish to be limited to all the. details of construction shown and described, but

What I` do claim is 1. As an article of manufacture, a crank arm having a. main body part of hollow sheet metal, a hollow handle at the end there-v of constituting a continuation of the sheet metal of the body part, and. afsocket member integral with the main body part.

2. As an article .of manufacture, a crank handle havin a handle, a main portion, and a socket, sai socket comprising a pair of sheet metal arms, andsaid body portion being formed of a single piece of sheet metal integral with said arms. j

3. As a'n article of manufacture, a crank arm having a hollow handle, a hollow main or' body part integrally connected'with the handle and provided with ar seam on the side opposite the handle, and a socket portion comprising arms integral with said main body portion.

` 4. As an article. of manufacture,- a crankv handle having a socket, a main. body portion, and a handle, said main body portion consisting of a piece of sheet metal bent` up at the edges until said edges meet to form a longitudinal sea on one side thereof, and said handle construting a lcontinuation When the parts are fixed in position as indicatedin Fig. 17, the end` wall 31 of right-,angles to the plane thereof, said arms ferrnleitting on said arms and extending with, the passage between the arms, said w of said body portion having a seam on the r; outer side in continuation of the seam on said body portion. 'y

5. As an article of manufacture, acrank handle comprising a hollow sheet metal l body portion, a holiow handle and ay socket', said socket comprising sheet metal arms inf tegral with the body portion and having a 'i passage between them constituting a. socket, and a fcrrule secured vto said arms and body |f portion and snrroimding the arms. L 6. As an article of manufacture, a crank I arm comprising a hollow sheet metal body l portion and handle integral with each other, and a socket comprising two arms' integral i with the body portion and extending at right angles to the plane thereof, saidy arms having a passage between them, and a sheet metal ferrnle around said arms and having l an end wall cnt ont to form an opening ot' the same shape as4 the passage between said arms.

7. As an article "of manufacture, a crank arm comprising a nollow sheet metal por tion and handle integral with each other, and a socket comprising ltwo arms integral with the body portion and extending at having a passage between them,.and a sheet metal ferrule around said arms and having an end wall cut `ont to form an opening of l the same shape as the passage between said arms, the remaining portion of the end wall of the ferrnle being swaged inwardly against the ends of. said arms so as to secure the 'ferrule thereon.

8. As an article of manufacture, a crank i arm comprising a hollow sheet metal main portion, a handle, two arms projecting at rightangles from the end of the main portion and integral therewith and having between them a polygonal passage, and a sheet metal ferrule' surrounding said arms and secured to them, said ferrule extending from the outer ends of the arms inwardly into engagement with the main portion on one side and Hush witlnthe opposite edge of the main portion on the other side and having means for 4securing it to the ends of the arms.

9. In an article of the class described, the eolnbinatioirof a hollow sheet metal main portion having two integral arms projecting at right angles therefrom and in Contact with' each other attheir edges and having a polygonal passage between them, and a sheet metal the whole length thereof, said ferrule being cut ont on one side to receive the end of the main portion and provided with a wall at the other end having a passage therethrough of the same shape as, and registerin p being swaged into iirm contact with the of said arms;

10; In an article of the class described,

combination of a sheet metalvmain portion.

said' ar1ns said main portion having at its;

edges outwardly projecting ridges dash with the surface of the ferrnle and engr m *ng it.

l1. In an article of the class described, they combination of hollow sheet metalM body portion having integrali opposite sheet metal 1 arms extending at right angles from one end l and having a polygonal passage between i them, and having twolopposite outwardly y extending-ridges at the enter edges of said arms extending beyond them, and a. sheet j metal ferrule fitting over said arms and ont' ont on one side to receive said body portion, the ends ofv said ridges abutting against the ends of said cnt ont portion and bein flush f therewith, and means whereby said ge. 5 is rmly held in position onthe arms.

rrnie 12. As anA article of manufactura, a cra-.nk

` handle comprising a hollow sheet meta-.l body L portion, and a socket having a part integral:`

therewith, said body portion being provided E with outwardly projecting ridges at one end extending to the other sides of the socket. and constituting the opposite edges/of the body portion.

13. is an article of manufacture, a crank handle comprising a hollow sheet metal body portion, a handle integral therewith, and a .socket comprising two parts, an inner part integral with the body portieri,y and an onter part secured thereto, said body portion having two opposite outwardly extending ridgesforming the sides thereof projecting beyond the integral portion o the socket and finish with the outer portion thereof.

14. As an article of manufacture, a crank handle comp-rising a hollow sheet metal body portion, a handle integral therewith, and a socket at the end of the body portion'comf prisin two parts, an inner part integral with t e body portion, and an onter secared thereto.

In testimony 'wlfiereof I have hereunto set my hand, in the presence of two subscribing witnesses. v

Witnesses Amnn'r E. 4Far, C. Fonrns'r Wasson.

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